Confirm the exact configuration
Use the manufacturer part number and model code—not appearance alone. Connection, size, material, voltage, pressure, seal, and control options can differ within the same product family.

SMC
The SMC 21-VQ157 is an official catalog model belonging to the 10/21-VQ Clean Room Valve series, designated as a Clean Series 21 component that is copper, fluorine, and silicon-free with low particle generation. This VQ1 valve features a 2 position single actuation configuration, a metal or rubber seal type, standard, high pressure, or low wattage function options, and operates on a 24 VDC or 12 VDC coil voltage with light and surge voltage suppressor. Electrical entry is provided via plug connector or lead wire alongside non-locking or locking manual overrides and side-ported cylinder connections including M5 threads or one-touch fittings for ø3.2, ø4, and ø6 tubing. Submit the exact part number, quantity, and application requirements to request a quote.
Industrial and obsolete parts are priced per enquiry: the final price depends on available stock, condition, quantity, and your delivery destination, so a fixed list price would be misleading. Request a quote and we confirm current pricing, lead time, and sourcing options — including hard-to-find and discontinued SMC references — within one business day.
For a faster response, include quantity, condition, and delivery destination.
Verified configuration
Engineering context
Use the manufacturer part number and model code—not appearance alone. Connection, size, material, voltage, pressure, seal, and control options can differ within the same product family.
Provide quantity, delivery country and ZIP/postal code, required condition, target date, and photographs of the existing nameplate when available.
Our sourcing response is prepared against SMC 21-VQ157. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.